<template>
  <div>
    <vxe-table
      border
      show-footer
      class="mytable-scrollbar"
      height="400"
      :footer-method="footerMethod"
      :data="tableData">
      <vxe-column type="seq" width="60" fixed="left"></vxe-column>
      <vxe-column field="name" title="Name" width="300"></vxe-column>
      <vxe-column field="sex" title="Sex" width="250"></vxe-column>
      <vxe-column field="age" title="Age" width="250"></vxe-column>
      <vxe-column field="role" title="Role" width="300"></vxe-column>
      <vxe-column field="address" title="Address" width="350" show-overflow></vxe-column>
    </vxe-table>
  </div>
</template>

<script>
export default {
  data () {
    return {
      tableData: [
        { id: 10001, name: 'Test1', role: 'Develop', sex: 'Man', age: 28, address: 'test abc' },
        { id: 10002, name: 'Test2', role: 'Test', sex: 'Women', age: 22, address: 'Guangzhou' },
        { id: 10003, name: 'Test3', role: 'PM', sex: 'Man', age: 32, address: 'Shanghai' },
        { id: 10004, name: 'Test4', role: 'Designer', sex: 'Women', age: 23, address: 'test abc' },
        { id: 10005, name: 'Test5', role: 'Develop', sex: 'Women', age: 30, address: 'Shanghai' },
        { id: 10006, name: 'Test6', role: 'Designer', sex: 'Women', age: 21, address: 'test abc' },
        { id: 10007, name: 'Test7', role: 'Test', sex: 'Man', age: 29, address: 'test abc' },
        { id: 10008, name: 'Test8', role: 'Develop', sex: 'Man', age: 35, address: 'test abc' }
      ]
    }
  },
  methods: {
    sumNum (list, field) {
      let count = 0
      list.forEach(item => {
        count += Number(item[field])
      })
      return count
    },
    footerMethod ({ columns, data }) {
      return [
        columns.map((column, columnIndex) => {
          if (columnIndex === 0) {
            return '平均'
          }
          if (['age'].includes(column.field)) {
            return this.sumNum(data, column.field)
          }
          return '-'
        })
      ]
    }
  }
}
</script>

<style lang="scss">
.mytable-scrollbar {
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-thumb {
    border-radius: 5px;
  }
}

/** 默认模式 */
[data-vxe-ui-theme="light"] {
  .mytable-scrollbar {
    ::-webkit-scrollbar-track,
    ::-webkit-scrollbar-corner {
      background-color: #FFFFFF;
    }
    ::-webkit-scrollbar-thumb {
      background-color: #bfbfbf;
    }
    ::-webkit-scrollbar-thumb:hover,
    ::-webkit-scrollbar-thumb:active {
      background-color: #787878;
    }
  }
}

/** 暗黑模式 */
[data-vxe-ui-theme="dark"] {
  .mytable-scrollbar {
    ::-webkit-scrollbar-track,
    ::-webkit-scrollbar-corner {
      background-color: #151518;
    }
    ::-webkit-scrollbar-thumb {
      background-color: #bfbfbf;
    }
    ::-webkit-scrollbar-thumb:hover,
    ::-webkit-scrollbar-thumb:active {
      background-color: #A3A6AD;
    }
  }
}
</style>
